SystemTrayMenu/NativeDllImport/SHGetFileInfo.cs

using System;
using System.Runtime.InteropServices;

namespace SystemTrayMenu.NativeDllImport
{
    public static partial class NativeMethods
    {
        private const int maxPath = 256;

        [DllImport("Shell32.dll", CharSet = CharSet.Unicode)]
        private static extern IntPtr SHGetFileInfo(
           string pszPath,
           uint dwFileAttributes,
           ref SHFILEINFO psfi,
           uint cbFileInfo,
           uint uFlags
           );

        public static IntPtr Shell32SHGetFileInfo(
           string pszPath,
           uint dwFileAttributes,
           ref SHFILEINFO psfi,
           uint cbFileInfo,
           uint uFlags
           )
        {
            return SHGetFileInfo(pszPath,
                dwFileAttributes,
                ref psfi,
                cbFileInfo,
                uFlags);
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct SHFILEINFO
        {
            public const int NAMESIZE = 80;
            public IntPtr hIcon;
            public int iIcon;
            public uint dwAttributes;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = maxPath)]
            public string szDisplayName;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NAMESIZE)]
            public string szTypeName;
        }
    }
}